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Cattle and sheep are raised 52 1 head, of which 73% are bulls and 7/1ewes.

Let the number of ewes be x, and get the equation according to the meaning of the question:

(x+650)5/6 =( 12/ 17)x+650

Solution: x=850

The number of cows is: 850 * 12/ 17 = 600 (head)

Cattle on the farm: 600+650= 1250 (head)

There are sheep on the farm: 850+650= 1500 (head)